Lock.



PATENTED MAR. 24, 1908.

C. JENSEN.

LOCK.

APPLICATION FILED 0012a. 1907.

2 SHEETS-SHEET l.

IRE mmms PEIERS co. WASHINGYQN. Dv c.

PATENTED MAR. 24, 1908.

C. JENSEN.

LOCK.

APPLICATION FILED 001. 2a. 1907.

2 SHEETS-SHEET 2,

THE NDRRIS PETERS ca, wnsnmaram n. 'c.

UNITED STATES PATENT OFFICE.

CHRIST JENSEN, OF CHICAGO, ILLINOIS.

To all whom it may concern:

Be it known that I, Cnnrsr JENSEN, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Locks, of which the following is a specification.

My invention relates to locks and particularly to safety door-locks.

The object of my invention is to provide a door-lock which may be operated from either the inside or outside of the door without the use of a key, but which, when locked from the inside, cannot be locked from the outside.

A further object is to provide an auxiliary device, operable from the outside for safe guarding the lock against being unfastened from the outside except by such persons as are provided with means for manipulating said device.

A further object is to provide a lock as mentioned, and equip the same with means operable from the inside, to prevent unlocking the door from the outside.

A further object is to provide means for eflectually closing at all times the opening through which the outside operating latch or arm projects, to prevent the lock being tampered with.

A further object is to provide an auxiliary bolt arranged within the keeper and which shall be operated simultaneously with the main bolt for locking the door.

, A further object is to provide a lock case which may be readily taken apart, without the use of tools, to facilitate repairs.

Other objects will appear hereinafter.

My invention will be more readily understood by reference to the accompanying drawings forming a part of this specification and which illustrates a lock embodying my invention in its preferred form.

In the drawings, Figure 1 is a vertical lon gitudinal section through the lock and the keeper, the parts being in the positions they assume when locked from the inside, Fig. 2 is a horizontal section on the line 0c.r of Fig. 1, Fig. 3 is a vertical transverse section on the line 'yz of Fig. 1, Fig. 4' is an eleva tion of the portion of, the lock which is seen Specification of Letters Patent.

from the outside, Fig.

Patented March 24:, 1908.

Application filed October 28, 1907. Serial No. 399,410.

from the outside, Fig. 5 is a fragmentary view, similar to Fig. 1, illustrating the parts in the positions they assume when locked 6 is a section on the line .22 of Fig. 3, Fig. 7 is a detail sectional view upon an enlarged scale, of the auxiliary device for safe guarding the lock when fastened from the outside, Fig. 8 is an elevation of the device for operating the auxiliary safe guard, Fig. 9 is a section on the line mm of Fig. 8, Fig. 10 is a modified form of the keeper bolt, and Fig. 11 is an end elevation of the lock case.

Referring to the drawings, A indicates generally the lock case. This comprises the face plate 1, the side plates, 2 and 3, the top and bottom plates, 4 and 5 respectively and the end plate, 6. These parts are detachably secured together in such a manner that they may be readily taken apart, in order to get to the mechanism of the lock, without the use of tools. To this end the case is constructed and assembled as follows: The plates, 2 and 3 are each provided with lugs,

7, formed upon their outer edge, and which,

enter holes or recesses 8 in the face plate, 1. After the plates, 2 and 3 are in position, the plates, 4 and 5 are put in place. T hose are each provided with a plurality of spring members, 9 which constitute tongues to enter loops or eyes, 10 formed upon or secured to the plates, 2 and 3. The inner end plate, 6, is then placed in position. This is provided with similar tongues, 11 which enter loops or eyes, 12 in the plates, 2, 3, 4:, and 5 respectively.

13 indicates the main bolt arranged to slide between the ribs 14 and 15 formed upon the side plates of the case. The lower edge of the bolt is provided with the teeth or rack 16 which meshes with the gear, 17, mountedupon the arbor, 18. The arbor, 18 extends through the plate, 3 to the inner face of the door and is provided with a knob, 19. By turning the knob to the right or left the bolt, 13 may be projected into or retracted from the keeper B. The keeper, B comprises a rectangular body portion, 20, a front or face plate, 21 and an end. plate, 22. The latter being secured in place in the same manner as the plate, 6. The keeper B is provided with an auxiliary bolt, 23, which enters the lock case A as the bolt, 13 is pushed into the keeper. Any suitable means may be provided for operating the auxiliary bolt. In

Fig. 1 I have illustrated a flexible member {)or this purpose and in Fig. 10 a rigid mem- Referring to Fig. 1. 24 indicates a flexible strip of spring steel secured as at 25 in the top of the body portion, 20 of the keeper. This is bent forwardly as at 26 to engage the inner edge of a block 27 slidably mounted in the keeper, and then is bent forwardly past the roller, 28 to the end plate, 22, then passes between the rollers, 29 and is secured to the inner end of the bolt, 23. As the bolt, 13 is shoved into place in the keeper, the block, 27 is shoved inwardly as shown in full lines. This, forces the flexible member past the rollers, driving the bolt, 23 through the aperture, 30 in the plate, 1 and into the lock case. When the bolt, 13, is retracted to unlock the door, suitable means must be provided for withdrawing or removing the bolt, 23 from the lock case. To this end I provide the blind-bolt, 31 within the lock case, A and form the same with the teeth or rack 32 upon its upper edge which meshes with the pinion, 17. As the bolt 13, is withdrawn from the keeper the blind bolt, 31 is pushed forwardly shoving the bolt, 23 out of the lock case and back into the keeper. This shoves the flexible member, 24 back past the rollers, 28 and 29, forcing the block, 27 forwardly to close the bolt receiving hole, 33, in the plate, 21. It is obvious that in locking the door the blind bolt, 31 is retracted a sufficient distance to permit the bolt, 23 to enter the case A.

In the modification shown in Fig. 10, the block, 27 and the bolt, 23 are formed as in tegral portions, of a lever, 34 pivoted as at 35 in the body portion, 20. The operation of this modification is obvious.

So far I have described the means for locking the door from the inside only; and when the door is locked from the inside there is no possible way of unlocking it from the outside, as will be more readily understood as the description proceeds. I will now describe the mechanism for locking and unlocking the door from the outside. Behind the bolt, 13 and in alinement therewith is slidably mounted a block, 36 having a stem, 37, which extends through a slot, 38, in the plate, 2, and constitutes a latch for operating the bolt, 13, from the outside. To the block, 36 are secured a pair of flexible members, 39- preferably formed of spring steel. These are ent as shown and are confined by the extension, 14 of the rib, 14. When the block, 36- is in retracted position a pair of pins, 40 hold the hooked ends, 41 apart.

42 indicates a loop formed on the end of the bolt, 13 and'which lies between the hooks,

41, when the bolt is retracted. (See dotted lines in Fig. 1). To lock the door, the block, 36 is pushed forwardly by the arm, or latch, 37, carrying the flexible members, 39 forward therewith. As the members, 39 advance the curved rib, 14 presses the hooks, 41 into engagement with the loop 42, and shoves the bolt, 13 forward as shown in Fig. 5. After the door has been locked from the outside, it may be unlocked from the outside by merely drawing back the latch, 37. As the hooks, 41 are in engagement with the loop, 42 the bolt, 13 will be withdrawn from the keeper until it reaches the position, shown in dotted lines in Fig. 1, at which time the pins, 40 will spread the ends of the members, 39 apart, withdrawing the hooks from the loop, 42.

At times it is desirable to secure the door against being unlocked from the outside after having been locked by a person upon the outside. To this end I equip the lock with the following device: 43 indicates a disk mounted upon a stem, 44 which projects through the side of the lock case upon the inner side of the door and which is provided with a knurled head, 45. Extending radially from the disk, 44 are a pair of flexible members or arms, 46, which, when the disk is in one position engage the racks upon the bolts, 13 and 31. This prevents retraction of the bolts as a pair of pins, 47 prevent the members, 46 from yielding to the force applied to the bolt. By turning the disk, 43 to the left, the members, 46 are withdrawn from the racks, 16 and 32 by the pins, 47. (See Fig. 1).

48 is a conical member arranged in front of the slot, 38 and extending from the plate, 2 to the outer face of the door. The member 48 is provided with the diaphragm, 49 having -a'slot, 50 through which the latch, 37 projects. Secured to the outer face of the conical member, 48 are a pair of flexible members, 5151. These extend through the sides of the member, 48 and close the slot, 50 as shown in the drawings, the free ends of themembers, 51. bearing against the latch, 37. As the latch 37 is pushed to one side or the other, the member, 51 toward which it is pushed. bows out into the recess, 52 formed in the door. T o maintain the members, 51 in proper position in the slot, 50, the walls of the slot are provided with the grooves, 53, to receive the edges of said members. This effectually closes the slot, 38 and prevents anyone from inserting an instrument therein to tamper with the lock.

54 indicates a curved member mounted upon the outer and upper face of the member, 48 and within the recess, 52. This member is slidable and is held in position by the guides, 55. After the door is locked from the outside, the curved member, 54 is moved until one end, 56 overlaps the flexible member, 51, as shown in Fig. 6. This prevents retraction of the latch, hence, of the bolt, as

the latch 37 cannot be operated unless the members, 51 are free. Upon the inner face of the plate, 2, are a pair of lugs, 57. These are arranged each side of the slot, 38 and the block, 36 is reciprocated between them. Upon the block are arranged a pair of short flexible members, 58, which engage the ends of the lugs, 57 at both limits of its movement, as shown in Figs. 1 and This prevents aceidental displacement of the block, 36 from the tension of the members, 51.

To operate the auxiliary safe guarding de vice, 54, I provide the following mechanism: Mounted upon the top of the conical member, 48 is a pinion, 59, having a segment, 60

of depending gear teeth to engage a rack, 61

formed on the member, 54. By turning the pinion, 59, the member 54 is reciprocated. Adjacent to the pinion, 59 is a hood, 62 having a depending pin, 63. The pin, 63 is conical and is preferably threaded as at 64. 65 indicates the actuating member. This comprises a stem, 66, having a substantially spherical head, 67 the latter of which is formed with the gear teeth, 68. The head, 67 and the stem, 66 are split longitudinally as shown in Figs. 7 and 9. To operate the device, the member, 65 is inserted through the hole or aperture, 69 in the member, 48 and pressed upwardly into engagement with the pin, 63. The pin, 63 spreads the head sufficiently to engage the pinion, 59 then by turning the member, 65, the member, 54 may be actuated.

To prevent the door from being locked from the outside when desired, I provide the block, 70 having a stem, 71 which projects through the case to the inside of the door. By moving the block, 70, to the left, into the position shown in dotted lines in Fig. 1., the block, 36 is prevented from moving, hence, the door cannot be locked at such times from the outside.

If desired, the door bell, 72 may be ar ranged upon the lock. The clapper, 73 is arranged upon a shaft, 74 having a pinion, 75 within the lock case which meshes with a pinion, 76 upon the shaft, 78. The shaft, 78 extends to the outside of the door and is provided with the knob, 79, by turning which the bell is rung. To prevent the bell from being rung, I provide the block, 80 which is mounted for vertical reciprocation in the case A below the pinions 75 and 76. By raising the block into engagement with the pinions, it is obvious that the bell is prevented from being rung.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a look, a bolt, in combination with a rotary device for reciprocating said bolt from the inside, a horizontally reciprocatory device adjacent to said bolt and normally disconnected therefrom for operating said 1 bolt from the outside, means for engaging the same with said bolt when the latter is in retracted position and means for preventing the same from being engaged with said bolt when the latter is in locked position, substantially as described.

2. In a lock, a bolt, in combination with means for reciprocating said bolt from the inside, a block mounted in alinement with said bolt, means for reciprocating said block from the outside, a pair of flexible arms secured to said block, means for causing said arms to engage said bolt, when moved in one direction and means for disengaging said arms from said bolt at the last part of its movement in the opposite direction, sub stantially as described.

3. In a lock, a suitable case, in combina tion with a bolt mounted thereon, means for reciprocating said bolt from the inside, means for reciprocating said bolt from the outside, means operable from the outside to prevent rficiprocation of said bolt after having been locked from the outside and means operable from the inside for the same purpose, substantially as described.

4. A lock comprising a suitable case, a bolt arranged therein and means for reciprocating said bolt, in combination with a keeper, an auxiliary bolt arranged within said keeper and adapted to be operated by the first said bolt to enter said lock case, and means in said lock case for ejecting said auxiliary bolt therefrom as the first said bolt is retracted, substantially as described.

5. A lock comprising a suitable case, a main bolt mounted therein, means for reciprocating said bolt, in combination a keeper, an auxiliary bolt mounted in said keeper and adapted to enter said lock case as said main bolt enters the keeper and a blind bolt operable simultaneously with the retraction of the main belt for ejecting the auxiliary bolt from the lock case, substantially as described.

6. In a lock, a bolt, having a rack ,upon

one edge thereof, a pinion meshing with said rack and operable from the inside to reciprocate said bolt and means normally disconnected from said bolt for operating the same from the outside, substantially as described.

7. In a lock, a bolt having a rack upon one edge thereof, a pinion in engagement with said rack and operable from the inside to reciprocate said bolt, other means operable from the outside to reciprocate said bolt and means operable from the inside to engage said rack to prevent reciprocation of the bolt, substantially as described.

8. In a lock, a bolt, in combination with means for reciprocating said bolt from the inside, a block mounted in alinement with said bolt, suitable means for connecting said block with said bolt whereby reciprocation of the former will operate the latter, a stem extending from said block and forming l In testimony whereof I have signed my means for reciprocating the same, said stem name to this specification in the presence of 10 extending through a suitable slot, a pair of two subscribing Witnesses.

flexible members arranged to close said slot 1 and one upon each side of said stem and CHRIST JENSEN means to prevent movement of one of said l/Vitnesses: flexible members to lock said block against FRANCES E. SHEEHY,

movement, substantially as described. HELEN F. LILLIs. 

